From c4b96913246fcb0c4adeb5a440fc0e7df70d7897 Mon Sep 17 00:00:00 2001
From: Andrew Armenia <armena@ultradian.com>
Date: Wed, 28 Dec 2011 13:47:22 -0500
Subject: [PATCH] add "hash_file" method to repository objects

This allows blobs to be created from arbitrary files.
(note that this currently requires an absolute path)
---
 lib/git/base.rb                 |  4 ++++
 lib/git/lib.rb                  |  4 ++++
 tests/units/test_hash_object.rb | 30 ++++++++++++++++++++++++++++++
 3 files changed, 38 insertions(+)
 create mode 100644 tests/units/test_hash_object.rb

diff --git a/lib/git/base.rb b/lib/git/base.rb
index 5ad8906a..f2147d3a 100644
--- a/lib/git/base.rb
+++ b/lib/git/base.rb
@@ -468,6 +468,10 @@ def cat_file(objectish)
       self.lib.object_contents(objectish)
     end
 
+    def hash_file(path)
+      self.lib.hash_file(path)
+    end
+
     # returns the name of the branch the working directory is currently on
     def current_branch
       self.lib.branch_current
diff --git a/lib/git/lib.rb b/lib/git/lib.rb
index 52fb2e6c..7a62ccd5 100644
--- a/lib/git/lib.rb
+++ b/lib/git/lib.rb
@@ -167,6 +167,10 @@ def object_contents(sha, &block)
       command('cat-file', ['-p', sha], &block)
     end
 
+    def hash_file(path, &block)
+      command('hash-object', ['-w', path], &block)
+    end
+
     def ls_tree(sha)
       data = {'blob' => {}, 'tree' => {}}
       
diff --git a/tests/units/test_hash_object.rb b/tests/units/test_hash_object.rb
new file mode 100644
index 00000000..dd92624a
--- /dev/null
+++ b/tests/units/test_hash_object.rb
@@ -0,0 +1,30 @@
+#!/usr/bin/env ruby
+
+require File.dirname(__FILE__) + '/../test_helper'
+
+class TestHashObject < Test::Unit::TestCase
+
+  def setup
+    set_file_paths
+    @git = Git.open(@wdir)
+  end
+  
+  def test_hash_file
+    
+    in_temp_dir do
+      g = Git.clone(@wbare, 'test')
+
+      File.open('test_file', 'w') do |f|
+        f.write('asdfasdf')
+      end
+
+      hash = g.hash_file(File.expand_path('test_file'))
+
+      # from git-hash-object
+      assert(hash == '23a3a9d599131d7f61b7383e5814c63e63ed186d') 
+      # make sure file was created in repository
+      assert(g.cat_file(hash) == 'asdfasdf');
+    end
+  end
+
+end